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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P0A9M5 New Search
5PDB entries
5Biological assembly
16chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
1A95 XPRTASE FROM E. COLI COMPLEXED WITH MG:CPRPP AND GUANINE Deposited 1998-04-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–152（152 aa）
Chain B 1–152（152 aa）
Chain C 1–152（152 aa）
Chain D 1–152（152 aa）
Not recorded BO3 BORIC ACID × 2 MG MAGNESIUM ION × 2 PCP 1-ALPHA-PYROPHOSPHORYL-2-ALPHA,3-ALPHA-DIHYDROXY-4-BETA-CYCLOPENTANE-METHANOL-5-PHOSPHATE × 2 GUN GUANINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 9；XPRT WAS CRYSTALLISED FROM 15-20% PEG4000, 0.1 M BORATE PH 9.0, 0.1 M AMMONIUM PHOSPHATE
Resolution 2.00 Å R-free 0.232
1A96 XPRTASE FROM E. COLI WITH BOUND CPRPP AND XANTHINE Deposited 1998-04-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–152（152 aa）
Chain B 1–152（152 aa）
Chain C 1–152（152 aa）
Chain D 1–152（152 aa）
Not recorded BO3 BORIC ACID × 2 MG MAGNESIUM ION × 2 PCP 1-ALPHA-PYROPHOSPHORYL-2-ALPHA,3-ALPHA-DIHYDROXY-4-BETA-CYCLOPENTANE-METHANOL-5-PHOSPHATE × 2 XAN XANTHINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 9；XPRT WAS CRYSTALLISED FROM 15 - 20% PEG 4000, 0.1 M AMMONIUM SULPHATE IN 0.1 M BORATE, PH 9., pH 9.0
Resolution 2.00 Å R-free 0.244
1A97 XPRTASE FROM E. COLI COMPLEXED WITH GMP Deposited 1998-04-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 3–150（148 aa）
Chain B 3–150（148 aa）
Chain C 3–150（148 aa）
Chain D 3–150（148 aa）
Mutation：C59A Mutation：C59A Mutation：C59A Mutation：C59A BO3 BORIC ACID × 4 5GP GUANOSINE-5'-MONOPHOSPHATE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 9；XPRT WAS CRYSTALLISED FROM 15 - 20% PEG 4000, 0.1 M AMMONIUM PHOSPHATE IN 0.1 M BORATE, PH 9., pH 9.0
Resolution 2.60 Å R-free 0.263
1A98 XPRTASE FROM E. COLI COMPLEXED WITH GMP Deposited 1998-04-16 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–152（152 aa）
Chain B 1–152（152 aa）
Mutation：C59A Mutation：C59A No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；XPRT WAS CRYSTALLIZED FROM 20% PEG4000 IN 0.1 M TRIS-HCL, pH 8.0
Resolution 2.25 Å R-free 0.224
1NUL XPRTASE FROM E. COLI Deposited 1996-10-15 Assembly 1 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–152（152 aa）
Chain B 1–152（152 aa）
Not recorded SO4 SULFATE ION × 4 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；XPRT WAS CRYSTALLISED FROM 18 - 23% PEG 4000, 0.1 M LI2SO4 IN 0.1 M TRIS-HCL, PH 8., pH 8.0
Resolution 1.80 Å R-free 0.234

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.